Europe launches exascale supercomputer in Jülich

On 5 September 2025, Commissioner Ekaterina Zaharieva and German Chancellor Friedrich Merz inaugurated the new JUPITER supercomputer at Forschungszentrum Jülich in Germany. JUPITER has officially become the first European system to achieve the exascale threshold. Officially ranked as Europe's most powerful supercomputer and the fourth fastest worldwide, JUPITER combines its performance with a strong focus on sustainability. The system runs entirely on renewable energy and features cutting-edge cooling and energy reuse.

JUPITER will allow researchers to run climate and weather models at kilometre‑scale resolution, enabling much more precise forecasts of extreme events such as heatwaves, heavy storms, and floods.

The supercomputer represents a €500 million joint investment by the EU and Germany channelled through the EuroHPC Joint Undertaking. It is part of Europe's wider strategy to develop a network of AI Gigafactories: large-scale, energy‑efficient computing hubs dedicated to training and deploying frontier AI models.

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